TY - JOUR AU - Lusztig, G. TI - Study of a 𝐙-form of the coordinate ring of a reductive group JO - Journal of the American Mathematical Society PY - 2009 SP - 739 EP - 769 VL - 22 IS - 3 UR - http://geodesic.mathdoc.fr/articles/10.1090/S0894-0347-08-00603-6/ DO - 10.1090/S0894-0347-08-00603-6 ID - 10_1090_S0894_0347_08_00603_6 ER -